Automatic grain weigher



Jul 7, 1925. 1,544,545

G. M. BAIRD AUTOMATIC GRAIN WEIGHER Filed June 26, 1923 2 Sheets-Sheet 2 3 J5 z? z7- 3 32 3 /o 25 31 9 25 5 {y} n l5 9; A /a I? zoQ 20 1 l8 /7' I l6 ,2! I

2 3 l6 l [I I l/ 1 INVEI VTOR 3 George M Baird ATTORNEYS.

Patented July 7, 1925.

UNITED STATES PATENT OFFICE.

...; 1 GEORGE M, BAIRD, 0F WICHITA, KANSAS.

AUTOMATIC eta-Am WEIGHER.

To all whom it may concern:

Be it known that I, GEORGE M. BAIRD, a citizen of United States, residing at Wichita, county of Sedgwick, and State of Kansas, have invented certain new and useful Improvements in Automatic Grain lVeighers, of which the following is a specification, reference being had to the accompanying drawings, which form a part of this specification.

My invention relates to a grain weigher.

The object of my invention is to provide an automatic weighing mechanism that will weigh a continuous flow of grain from the threshing machine. r

Another object of my invention is to provide simple means for door adjustment and reinforcement for the door. g Q

A further object of my invention is to provide a weigher that the mechanical actions are very sensitive and positiv in movement. I I

Referring to the drawings, Fig. 1 is a side elevation of weigher showing how .it is attached to the elevator and spout. Fig. 2 is a front view, parts broken away forconvenienc of illustration. Fig. 3 is a fragmentary detail of the baffle plate. Fig. 4 is .an enlarged detail view of door reinforcing means.

1 is the elevator leg, 2 is the elevator head,

connecting to said leg, and adaptedto discharge into the weigher said spout being funnelled as at 3, so as to throw the grain & 'within the opening of th weighing hopper.

The weigher is composed of four walls 4,

having ajbevelled top as at 5, and extend ing inward forming a stop at 6, functioning as a stop for deflector valve 7, said deflector valve being riveted or welded to stop arms 9, said arms-having a triangular loop end, for convenience ofengaging in the notched ends of pawls 10 and th opposite ends of said rods being rigidly attached to a cross shaft 11, by looping around said shaft, and having a pin 12 to cause said. shaft to revolve in its oscillating motion, said shaft 11 is trunnioned in bearings 13, said bearings having a frame 14, which is rigidly attached to side walls of weigher by means of rivets 15.- On both ends of said rod 11 is securely fastened a segmental member D, to which are attached rods 16 and 16, said shafts Application filed June 26, 1923. Serial No. 647,935.

on both sides of the weighinghopper and extending downward and pivotedly mounted at 16, to door 17, said doors being hingedly attached to weighing hopper 4, at 18.

The said hopper being in two compartments, being divided by a partition 19, securely riveted to side walls and extending from the rod 11 downward, and terminating intoa- V shape as shown at 20, so that when doors 17 are closed as shown at 17, the partition will engage with the bottom of the door as shown by dotted lines 21 in Fig. 4,.by which means, when the door is closed as at 17, the grain remains in the hopper. until'in the weighers descent, the door willopen, causing the grain to discharge into a receptacle not shown and the cause of this mechanical movement will be more fully described hereinafter.

The doors 17 and 17 are constructed of a sheet ofmetal with the ends turned upward,

forming a flange as at B, and both sides being open with one edge hingedly attached to weigher as heretofore described, with bottom member 22 fitting closely against the bottom edge of the hopper wall, and when closed the opposite of said door engages with the Vor bevelled member 20, as shown at 21, and the sides B lapping on the outside of the hopper'walls. The bottom 22 of said door is looped around a wire 23, providing a slant to said bottom as shown at C, tendency of which is to shoot the grain slightly forward and also as means for reinforcing the edge of said bottom in conjunction with the L-shaped member 24, by which means the weight of the grain is not sufiicient to spring along the edge of the door.

The weighing hopper is hung to the scale beam by means of a strap 25, which is riveted securely to the hopper on both sides, the said strap 25 having an opening 26, adapted to engage over a scale blade 27, functioning as apivot bearing, .and in close proximity is a corresponding bearing as follows: To the scale beam 28 1S r veted a member 29,

extending downward and engaging the pivot points as heretofore'described, and in said member 29 is an eye 30, engaging on a pivot blade 31, said blade being rigidly attached to the side of the lead, and the action of the scale beam and the hopper fulcrum on said blade 31, on the weight blade is placed a weight for graduating purpose, said weight is not shown on the beam, but is used to graduateithe resistancereqriired to V weigh a Certain quantity of the grain in equal measures in either one of the weigh-' mg hopper coinpartinents'ofthe-saidhoppartition 19 as heretofore described;

It will be understood-thatthe Scale. beam is U shape, extending around to the opposlte side of'the head ;and connecting tot the.

Weigher and-having1piv ot bearings"as heres. tofore .describech In- F1g. 2 1s shown p vot-q edly mounted 2p aivls .10, isaidQpawlsz having 7 Weight imposed, therein, Will. oause :the said stop 9'Wl1ich; travels ,With the idescent o f said shopper-to disengage, froninno tch w, at: w ich nsta trthe weight, being' imposed on the I door: 17 'as {shown in: Fig. 2 ,Lwill cause I said door to .open bymthe ,revollltiOli 1 of theses-mental, ,inemhep Dandpprior Ito openingsaid door,. the load is, supported-by rod-A ron the x'ertical, axis of shaft ,lL git-11d down over a hook 39, by which means, the

per, said hoppers being on eitheliiside of the bar; being; stationary providesthat zwhenv the weighingzhopper descends by ea on .otthe fleets-1: xv -lve, doors -11i1.1g ifc1ly attached to. the

bottonnofsaidfhop per, rocker members and connecting rods,2 thersaid rods connecting the iroeker ,JHQlDbQIS and; doorsg. said 1 rods ttached-{in; su611 a ayfthatnvhen one doo is, closed as connecting rod516 the point of connection of "said rod to said rocker mem er ill .he nea-revertically posi io ovcr..;the,;axis]of 'thieurockermember vshaft snandebly aid ipos'ition sand. angleiiof said rod W lli-pife zl killg 0111fihfififlfif fiflid rocker inenibers so formedth ti LRChS QWQl OIL thezheginnirig than i h first closing movementioftheiadjacent door said doors re proca ing in. heir;movementfiw the purpos et nt11.:andi;lescri bec1- 1 2 ,111 an automatic grain weigher; 3 Stationary elevator head, pavvls g pivotally meuntedion saidekvator head,- a. Scale'aheam, a ,tivo compartment Ihoppep suspended from s id:scale beamsai .is altzhamhaving ,piv-

otal -beamngs spaced j to aCC ODQlI Q ClEILI'LB lfo'r justinent, saiddoors being operated alter- :by thetpurchasehofvthiseposition,,the door vertical nioxen ent tocauseengagement;and iseasily he1d,.,in .a closed position thereby disengagement of adeflveto f; val-ve sto-p, a reducing ,the .tension; ofvgthe stop member, istopnionntedon saidyalije isaidgstop formed which isengaged in notch 32,,21 1l Q Wl11g itto and adapted to engage with 'pivotally slide easily out of; engagement 1 mo ntednpaiylswsaid pawlsiheing stationed -1 5.:: h%l7 fldl?At l fi l hb -fi fi tq l idfa efieotonvalve vator head iand the threshing machin pivotal-ll ;,mounted.by;.a.shifiii atr'thetop of Veying;tl1e..grain, tl1e weigherfiill function the partitionjbet veen-'said,-hopp$kc0nip fttie-follows 11 1 ne-ntsgairocker, member.niolintedioni., eh I When thedoc]; 17 is: closed; as, in, Fig. 2, end 501?, 11,, ,conneotingQods p13:-

5 the .grainzis peuri ngtf zom he dtstrikhig otzzjlly.,cennectedt id.r cksrms hhersmnd he e fie t s ve ich elii rsethe ipiirota lyx,c nnected-io saidnd orsnthe said grain into that side of the receptaclelfthat deflector valve beingescalatedby,the recio the door.is closed andqwhen,the required roeating movement,;ofi ;saidi-doors, all; for weight, as, ,gaugcdby the! scale beam; isiirnthe purpose set -forthland described 'posed 'the,hopp er will; drop byreason of 33111 311 1 auto mfljjhygllqin welgheyi an-e1 U5 grant-3 d ngegingi from? 1 P W ,:fi f torirav pent i scale. heaninexit riding hich;i stanti the-weight ofth gramme 'a imt ichsaid spon smeens 3 0.1: suspendii-lga c us ithe oor) o op n, ndlby which} action gra n zcontainer; inean rfo'r ipiiiotallymouiitth fdefie ctorsvaluer will be i-rre iersedgimmeing said scale beam i ..'g a n ico t nel'. V

diately closing theaoppositefioor andpause imiitllS cfdl ,steafdving;said.containertossaid e grain {t dischargein'ztheuoppq itefl-side ,;.e1 ;iiat. r -in scenhedesseutiof said and this rmoti n will, be aut matically 'rer conti ih l lw ;P l?i iiQ L fi id .i nta ner, peated,v Weighing; the g'rain accurately on -cle'; tle 'ctor valve plalte pivotallyr mounted at either side of the receptaclea thetop of said ,pa;jrt ition andtheflower edge In th sas entl n lt eso nt l -my ppsr, issidspar itionislantingLimoppositedirec- V I -ino ideda oepsd me h fihwhich g on v qis n e m [to the posit n. of, sis extends aroundconveyonl and {saidime nber door nndergeacli compartment..hingedlyqat being hingedly .,att.ached at.,a38,:v aI.i.C1 said ltaehed and "aetuated by rods s'ai'd rodsjrhavmeinloer-v 3'2, functioning, as a ,bail -willudrop in g ,an ofl'wset or curvature {for length adnately by the action of each other, and said movement controlled by the weight of the grain as a motive element when said container descends disengaging said step, a pair of bars functioning as pawls, said bars being pivotally mounted so that the stop engaging ends may ratchet, dispensing, the grain alternately for the purpose set forth and described.

4. In an automatic grain weigher, an elevator, a head, a scale beam pivotedly mounted on said head, a grain receptacle pivotedly depending from said beam, a bail hingedly attached to said elevator and also attached to said weighing hopper, a pair of doors, hingedly attached to bot-tom of said weighing hopper, said doors having a bevel on one edge and an L shape 011 the opposite side, and wire interposed between said shapes as reinforcing means, a shaft passing through said Weighing hopper, functioning asatrunnion, segmental member attached to ends of said shaft, rods pivotcdly mounted to said segmental member and to said doors, so that by oscillation the said doors move in opposite directions alternately and the said rods having a. bend as length adjusting means, a deflector valve firmly attached to said trunnion shaft, said valve having a stop member and said valve adapted to engage with the bevel top of weighing hopper as at 6, a pair of pawls, pii'otedly mounted and said pawls in close proximity adapted to engage said stop in its alternating movement, said movement created by the downward movement of said weighing hopper, when said Weighing hopper receives the proper weight for disengaging said stop, all for the purpose set forth and described.

GEORGE M. BAIRD. 

